Rainbow Electronics ATtiny26L - Manual (Page 147)

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ATtiny26(L)
1477B–AVR–04/02
Table of Contents Features................................................................................................. 1
Pin Configuration.................................................................................. 2
Disclaimer ............................................................................................................. 2
Description ............................................................................................ 3
Block Diagram ...................................................................................................... 4
Pin Descriptions.................................................................................................... 5
Architectural Overview......................................................................... 6
General Purpose Register File ............................................................................. 7
ALU – Arithmetic Logic Unit.................................................................................. 8
In-System Programmable Flash Program Memory .............................................. 9
SRAM Data Memory............................................................................................. 9
Program and Data Addressing Modes................................................................ 10
EEPROM Data Memory...................................................................................... 14
Memory Access Times and Instruction Execution Timing ............. 15
I/O Memory .......................................................................................... 17
Stack Pointer – SP.............................................................................................. 19
Reset and Interrupt Handling.............................................................................. 20
System Clock and Clock Options ..................................................... 25
Clock Systems and their Distribution .................................................................. 25
Clock Sources..................................................................................................... 27
Crystal Oscillator................................................................................................. 28
Low-frequency Crystal Oscillator ........................................................................ 29
External RC Oscillator ........................................................................................ 30
Calibrated Internal RC Oscillator ........................................................................ 31
External Clock..................................................................................................... 32
Power Management and Sleep Modes.............................................. 41
Minimizing Power Consumption ......................................................................... 43
Timer/Counters ................................................................................... 44
Timer/Counter0 Prescaler................................................................................... 44
Timer/Counter1 Prescaler................................................................................... 45
8-bit Timer/Counter0........................................................................................... 45
8-bit Timer/Counter1........................................................................................... 47
Watchdog Timer.................................................................................. 58
EEPROM Read/Write Access ............................................................. 60
Preventing EEPROM Corruption ........................................................................ 62